Sticky and Bouncy are proof of concept ideas and are not well documented. (Sorry!) They are not as good as I would like, but they are useful.
Note 1: Sticky is used to stop an animation when a dynamic object comes in contact with a static object. Both objects must be sticky. Please note, objects that follow a trajectory are static. Objects that obey Newton's laws are dynamic. All objects are static when they are first created. Objects become dynamic by invoking the "setForce" method.
Note 2: The bouncy property has only been implemented for object bouncing from rectangles.